topics: trig substitution: substitute and integrate...

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Topics: Trig Substitution: Substitute and Integrate Partial Fractions: Decompose and Integrate Numerical Integration: Trapezoid, Midpoint, Simpson Know the formulas. Error Polar: Convert between rectangular and polar (equations and points) Area Sketching: flowers, lines, cardiods, lemiçons, circles Intersections of graphs Parametrics: Eliminate the parameter, slopes, vertical/horizontal tangents, tangent lines Sequences: Limits, boundedness, increasing, decreasing, GLB, LUB

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Page 1: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Topics: Trig Substitution: Substitute and Integrate Partial Fractions: Decompose and Integrate Numerical Integration: Trapezoid, Midpoint, Simpson Know the formulas. Error Polar: Convert between rectangular and polar (equations and points) Area Sketching: flowers, lines, cardiods, lemiçons, circles Intersections of graphs Parametrics: Eliminate the parameter, slopes, vertical/horizontal tangents, tangent lines

Sequences: Limits, boundedness, increasing, decreasing, GLB, LUB

Page 2: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Section 9.3 Polar Coordinates Give 4 possible polar coordinates for the given point. Give ALL possible polar coordinates for the given point. 1. 2. (–4, 4)

( )3 1,−

Page 3: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Give rectangular coordinates for:

x = r cos θ y = r sin θ 1. (2, π) 2.

36, π⎛ ⎞

⎜ ⎟⎝ ⎠

Page 4: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Give polar coordinates for: 1. (0, 2) 2. (–3, –3)

Page 5: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Write the equation in polar coordinates. r2 = x2 + y2 tan θ = y/x 1. x2 + y2 = 16 2. y = x 3. x = 10 4. x2 + (y + 3)2 = 9

Page 6: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Write in rectangular coordinates. 1. r = 3 sinθ 2. tanθ = 5 3. r sinθ = 6

Page 7: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

9.4 Graphing in Polar Coordinates Sketch the polar curve for the given values of �. 1. r = 3 + 3 cosθ 2. r = 2 – 2 cosθ

0 ≤ θ ≤ π

32 2π π≤ θ ≤

Page 8: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

3. r = 3 + 1 sinθ 4. r = 1 – 3 sinθ

2π ≤ θ ≤ π

2π ≤ θ ≤ π

Page 9: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

5. r = cos (4θ) 6. r = sin (3θ)

02π≤ θ ≤

2π ≤ θ ≤ π

Page 10: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Section 9.5 Area in Polar Coordinates Set up the integral that gives the requested area. 1. one petal of r = 3 cos (5θ) 2. one petal of r = 2 cos (4θ)

Page 11: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

3. inside outer loop of r = 1 – 2 cos θ and in Quadrants I, IV 4. one petal of r = 5 sin (3θ)

Page 12: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

5. outside r = 2 and inside r = 4 sin θ 6. inside r = 2 and outside r = 4 cos θ

Page 13: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

7. inside the inner loop of r = 1 – 2 sin θ

Page 14: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Section 9.6 Curves given Parametrically Give an equation relating x and y. 1. x(t) = sin t y(t) = 1 + cos t 2. x(t) = 3 + 2cos t y(t) = –1 + sin t

Page 15: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

1. Give a parameterization for the line segment from (–5, 8) to (1, 3).

Page 16: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Section 9.7 Tangents to curves given parametrically Find an equation in x and y for the line tangent (or normal) to the curve. 1. x(t) = 2 – 3 cos t y(t) = 3 + 2 sin t at t = π/4

dydy dt

dxdxdt

=

Page 17: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

2. Find points of horizontal and vertical tangency. x(t) = t2 y(t) = t3 – 3t

Page 18: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

Section 9.7 Tangents to curves given parametrically Find an equation in x and y for the line tangent (or normal) to the curve. 1. x(t) = 2 – 3 cos t y(t) = 3 + 2 sin t at t = π/4

dydy dt

dxdxdt

=

Page 19: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

2. Find points of horizontal and vertical tangency. x(t) = t2 y(t) = t3 – 3t

Page 20: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

3. Find a parametrization for the curve y3 = x2 from (1, 1) to (8, 4).

Page 21: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

4. Give an equation for the normal line to the graph of x = sin t, y = 2 + cos 2t at the point where t = π/6.

Page 22: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

5. Give an equation for the line tangent to the polar curve r = 2 cos θ at the point where θ = π/3.

Page 23: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

1. Give the limit for ( )cos

n 1

n

n

=

⎧ ⎫⎪ ⎪⎨ ⎬⎪ ⎪⎩ ⎭

a. 0 b. 1 c. 2 d. 3 e. none of these

Page 24: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER 2. Give the y intercept of the normal line to (t2 – 1, t + t2) at (0, 2). a. 0 b. 1 c. 2 d. 3 e. none of these

Page 25: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER 3. Give a parameterization for the line segment from (2, 1) to (–4, 3). a. x(t) = 2 – 3t, y(t) = 1 + t, 0 ≤ t ≤ 1 b. x(t) = –4+6t, y(t) = 3 – 2t, 0 ≤ t ≤ 1 c. x(t) = 2 – 6t, y(t) = 1 + 2t, 0 ≤ t ≤ 1 d. x(t) = – 4 + 3t, y(t) = 3 – t, 0 ≤ t ≤ 1

Page 26: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

4. Give the GLB of n

n 1

12

=

⎧ ⎫−⎛ ⎞⎪ ⎪⎨ ⎬⎜ ⎟⎝ ⎠⎪ ⎪⎩ ⎭

a. –1 b. 0 c. 1 d. DNE e. none of these

Page 27: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

5. Give the limit for 2

n 1

nn 1

=

⎧ ⎫⎪ ⎪⎨ ⎬+⎪ ⎪⎩ ⎭

a. 0 b. 1 c. 2 d. DNE e. none of these

Page 28: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

6. Give the limit for 1

4n

a. 1 b. 2 c. 3 d. DNE e. none of these

Page 29: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

7. Give the limit for tan n4n 1

π+

a. 0 b. 1 c. 2 d. DNE e. none of these

Page 30: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

8. Give the limit for n

n

2

4 1+

a. 0 b. 1 c. ½ d. DNE e. none of these

Page 31: Topics: Trig Substitution: Substitute and Integrate ...josic/old_website/myweb/teaching/1432/Notes/... · Section 9.5 Area in Polar Coordinates Set up the integral that gives the

POPPER

9. Give the limit for 2n

11n

⎛ ⎞+⎜ ⎟⎝ ⎠

a. 1 b. e c. e2 d. DNE e. none of these